Demonstrators marching in Boston after Baltimore death

More than 500 demonstrators marched through Boston on Wednesday night to show solidarity with those protesting the death of a young black man who died earlier this month in police custody in Baltimore.

Protesters gathered behind Boston police headquarters in Roxbury at about 6 p.m. and were greeted by Police Superintendent-in-Chief William Gross, who waded into the crowd to shake hands with organizer Brock Satter.

“I’m a student of history,” Gross, the department’s first black police chief, told Satter. “If people didn’t protest what they felt was injustice, I wouldn’t be here in this capacity today as chief.”

The rally began soon after with a call and response chant of “Hands up!” “Don’t shoot,” and Satter laid out the demands of the group, called Mass Action Against Police Brutality.

“We have a clear message,” Satter said. “We’re gonna demand the government indict the killers of Freddie Gray. If you want peace, if you want calm, jail the killers of Freddie Gray.”